Applications: 

Type 347H is a high carbon austenitic chromium stainless steel. Found in applications that demand high temperature resistance, other major design features include:

Similar resistance and corrosion protection as Alloy 304

Used for heavy welded equipment when annealing is not possible

Good oxidation resistance, on par with most other austenitic stainless steels

Higher carbon allows for better high temperature creep properties

Due to Type 347H unique properties it is used in a variety of application in many of today’s critical industries:

Boiler tubes and casings

Oil and gas refinery piping

Radiant superheaters

High-pressure steam pipes

Heat exchanger tubes

Cabin heaters

Heavy wall-welded equipment

Aircraft exhaust stacks and collector rings